The ultimate solution for thorough cleaning of DWC floating rafts and NFT channels in hydroculture systems

There is surging global demand for thorough cleaning of DWC floating rafts and NFT channels in hydroculture systems. Although hydroculture and hydroponic systems have been around for decades, the number of nurseries using these systems is rising sharply. It is essential that the floating rafts and channels used in these systems are cleaned using a process that guarantees high quality results. Any algae, plant remains, substrate and root residues left behind in the rafts and channels can allow moulds such as Pythium to develop. The presence of moulds presents risks for the next growing cycle. The floating raft and channel washers from Limex eliminate the risk of contamination. 

Growing demand for DWC floating raft washers and NFT channel washers

Limex has supplied floating raft washers for years, playing an important role in protecting crops grown in hydroponic systems. Due to rapid developments in the market and the technology used in these systems, Limex was increasingly approached with requests to supply washers for NFT channels. In response, Limex decided to develop brand new channel washers and floating raft washers that meet strict hygiene requirements and minimise water consumption. The result: washers that not only clean rafts and channels visually, but also ensure they are microbiologically safe. These washers are also more compact and complete than their counterparts.

Water consumption of gutter and floating raft washers

Various channels washers that were previously already available in the market used fresh water for the washing process. This water was then flushed away and was wasted. Limex raft and channel washers filter the water intensively before it is reused in the cleaning process. This almost completely closed-loop system provides a sustainable solution, which makes Limex channel washers and floating raft washers unique.

Delicate handling of floating rafts

Limex floating raft washers handle the products with extreme care, applying a very low mechanical load on the rafts. Techniques such as banging, turning or brushing the fragile rafts are avoided. This protects the delicate material, for example used in polystyrene rafts, from damage.

A healthy end product needs a clean start

Limex floating raft and channel washers also operate using a specific pressure-to-volume ratio so the washers can easily rinse solid particles such as substrate and root residues from the rafts and channels. Completely removing these residues reduces the risk of contamination in the following growing cycle. Channels and rafts can also be filled for the next growing cycle without problems when they are completely clean.

Use of chemicals in floating raft washers and channel washers

When chemicals are used in the cleaning process, there is a risk of chemical residues remaining on the rafts and channels. Using an alkaline cleaner like soap can certainly improve the cleaning results, but these chemical residues are potentially harmful to the cultivation water. Because of this, it is not recommended to use chemical cleaning agents in hydroculture systems. Disinfectants such as hydrogen peroxide are usually used instead. Limex washers are equipped with dosing units that automatically add hydrogen peroxide. In this way, our washers contribute to safeguarding the quality and health of your crops.

What about disadvantages or blind spots?

Would you like more information about the advantages and disadvantages, possibilities and potential blind spots of floating rafts and channels? Contact us!

Also read these news

Renting brings crate washing at scale within reach

Renting brings crate washing at scale within reach

Renting brings crate washing at scale within reach

Read more

Refurbished bucket, tray and crate washers: the budget-friendly, sustainable alternative

Refurbished bucket, tray and crate washers: the budget-friendly, sustainable alternative

Using advanced technology, Limex can breathe new life into even the oldest machines to continue providing outstanding washing results. These refurbished/reusable machines are not only lower priced, they are also more sustainable.

Read more

Looking back on 2021: exponential growth, innovative developments, and new locations

Looking back on 2021: exponential growth, innovative developments, and new locations

“All this has only been possible thanks to all the hard-working colleagues, fine customers, and loyal partners. Thank you for your tireless efforts and enthusiasm!” Joep Janssen, Limex Management

Read more

Browse our complete news overview here.

Possibly also interesting

NFT-Gutter washer

NFT-Gutter washer

Our NFT gutter washers will help you remove plant debris, root residues, algae and substrate from your gutters, without using chemicals that could harm your crops.

View machine

Crate washing machines

Crate washing machines

Our machines make an important contribution to being able to meet the highest hygiene requirements and strictest food safety standards.

View machine

Bucket washing machines

Bucket washing machines

This machine makes it possible and is also extremely durable. Bacteria and moulds don’t get a chance to affect your cargo.

View machine

This is what satisfied customers say about us

Limex tray and raft washing machine lowers water use and improves cultivation hygiene at De Kruidenaer

Christ Monden: “After I gave Joep Janssen a tour in the greenhouse and shared my wishes, he immediately had an idea of our wishes and the practical applications. That ultimately led to the installation of the washer, which enabled us to save a lot of water”

Improved cultivation hygiene for ImHofBio thanks to the Limex tray washing system

After examining many different machines, we finally settled on purchasing our new machine from Limex. We received competent and thorough advice before buying. Limex also adapted the new machine to our needs. In addition, our first few experiences have shown that the after-sales service and advice from Limex is also fantastic. – Hansjürg Imhof

Fully automatic washing line for Royal De Ree Holland

“What we now have is a system that washes the transport crates far better than the previous installation, and the number of operators has been reduced from three to just one.”- Joost van den Berg

Limex crate and tray washer at Jungpflanzen Gernert

“The trays are thoroughly cleaned and disinfected with foam from Menno Florades. The washing result could be seen very quickly from the better root quality.” – Achim Gernert

Intensive and sustainable crate washer for Wijnen Square Crops

“With this washer, we can be sure that the crates that come out of the machine are clean and free from viruses and other diseases; we can use them in our processes without risk.” – Koen Saris

Meet our sustainable partner: PlantLab

“We are excited about the washing result of the Limex machine. We like to share our plans and working method with a company like Limex that is also committed to sustainability and we are looking forward to a beautiful and successful collaboration in the future!” – Mr. Hans van Scheijndel

Limex develops process for hygienic cleaning of propagation trays

“Limex is developing constantly to meet our increasingly stringent requirements. We can recommend Limex with a clear conscience.” – Oliver Schneider

5 Tray washers in 4 years at Svenska Skogsplantor

“Our collaboration with Limex has worked very well. A supplier that we will continue to work with and can recommend as a good partner.“ – Niclas Noord

Limex crate washers at Wesselman Flowers

“During cultivation, we see cycle after cycle of tulips emerging uniformly. An extra benefit is that the machine can remove the TVX virus. I can certainly recommend a Limex washer to every tulip grower.” – Joost Wesselman

Hishtil and Limex announce intensive collaboration

“The fruits of this productive collaboration between Limex and Hishtil permit both companies to offer their customers the best sanitation solution and healthy propagating material that will allow them to maximize crop quality and yields.” – Amit Dagan

Silver – our tray washer partner in Chile

“It is a pleasure for us to work with Limex, which is aware of the problems of hygiene and water scarcity that concern us in Chile and some regions.” – Martin Campos

Limex crate washer at Boer Erik

“I have seen Limex machines at other fruit growers, even one that has been in use for 25 years and is still running. When I invest, I think it is important to invest in high-quality and well-functioning products that I will be able to use for years to come.” – Boer Erik

Industrial tray and trolley washing machines for Ontario Plants Propagation, Canada

“I’m really proud that we get such large, intensive trolley and tray washers.” – Pieter van Dijk

Limex Bucket Washer at Veiling Holambra Brazil

“The delivery of the bucket washer from Limex has fully met all our expectations! Limex has now a satisfied customer in Brazil!” – André van Kruijssen

Limex trolley washer helps improve hygiene at WPK Vegetable Plants

“This investment improves our capacity to keep any potential threats at bay,” says Erik van der Arend, general manager at WPK Vegetable Plants.

LCS/Royal FloraHolland Bucket Washers

“The Limex washers are an indispensable component for a successful service to LCS!” – Jan van Hoef

Sustainable box cleaner Scherpenhuizen

For distribution centre Scherpenhuizen, Limex supplied a boxwasher, type KKW6000NS for sustainable washing of boxes where the water is heated by high-quality residual heat from cooling.

Limex tray washer at Bergvik Skog Plantor

“To have a tray washer that works this great has really boosted our production at the nursery. The growing trays gets clean and we can use them over and over again in our production without any problems. I can highly recommend any forest plant producer to use a Limex Washer in their production line.” – Ronny Anngren

Limex crate washer at Banken Champignons

“The Limex crate washer meets our hygiene requirements (microbiological cleanliness) and produces a drying result of less than four grams per crate. This allows an output of 5,600 clean crates per hour, and that maintains our delivery capacity at an optimal level. ” – Jurgen Banken